Multiple owners - ensures that when the app needs to shared with someone else, you have extra resilience, in case of sickness, or owner leaves company before someone was aware they needed to change the ownership.

If PowerApp creators can have multiple owners and one of the owners leaves the business, the app isn't lost as the other owner can still maintain the app. This would be great for the human error where the PowerApp admins must check if an owner is leaving the business and change the owner of the application using PowerShell, Overall I believe something like 'Team Flows' should be added into PowerApps as well.